C#中判断字符串是否中文的方法

   public bool IsChinaString(string CString)
         {
           bool BoolValue = false;
           for (int i = ; i < CString.Length; i++)
             {
               if (Convert.ToInt32(Convert.ToChar(CString.Substring(i, )))< Convert.ToInt32(Convert.ToChar()))
                 {
                   BoolValue = false;
                  }
                  else
                 {
 
                     return BoolValue = true;
                 }
                 }
 
               return BoolValue;
 
         }

页面中使用jquery判断文本框先输入的中文还是英文的判断

   var c = $("#txtStreet").val().charCodeAt();
                              if (c >=  && c <=  || c >=  && c <= ) {
 
                                  return {
                                      label: item.StreetName_EN + "," + item.StreetName1,
                                      value: item.StreetName_EN + "," + item.StreetName1,
                                       }
                                } else {
 
                                  return {
                                      label: item.StreetName1 + "," + item.StreetName_EN,
                                      value: item.StreetName1 + "," + item.StreetName_EN,
                                  }